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Chapter 3: Problem 60

Suppose an atom has a mass of 11 amu and has five electrons. What is this atom's atomic number?

Short Answer

Expert verified
The atomic number of the atom is 5.

Step by step solution

01

Understanding Atomic Number

The atomic number of an atom is determined by the number of protons present in its nucleus. In an electrically neutral atom, the number of protons is equal to the number of electrons.
02

Find the atomic number

It is given in the problem that the atom has five electrons. Since the atom is neutral, it must also contain five protons.
03

Atomic Number Result

Since the number of protons in an atom defines its atomic number, an atom that contains five protons will have an atomic number of 5.

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